{% include 'head.html' %}
<body>
{% if id %}
    <h1>Video {{ id }}</h1>
    <div>
        <video width="800" controls autoplay>
            <source src="{{ url_for('play',video_id=id) }}" type="video/mp4"/>
        </video>
    </div>
{% else %}
    <h1>没有视频存在</h1>
{% endif %}
</body>
</html>